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Magic, precise, and electroweak

Event Dates:

Seminar Location:

JILA X317

Speaker Name(s):

Andrei Derevianko

Speaker Affiliation(s):

University of Nevada-Reno

Seminar Type/Subject

Scientific Seminar Type:

Other

Seminar Type Other:

Bi-group Seminar

Event Details & Abstract:

Accurate timepieces are marvels of human ingenuity. Over the past half-a-century, precision time-keeping has been carried out with atomic clocks. I will review a novel and rapidly developing class of atomic clocks, optical lattice clocks. At their projected accuracy level, these would neither lose nor gain a fraction of a second over an estimated age of the Universe. In other words, if someone built such a clock at the Big Bang and if the clock survived the 14 billion years, it would be off by no more than a mere second. I will also present the next frontier:the nuclear clock. In the second part I will overview atomic searches for new physics beyond the Standard Model of elementary particles. I will report on a refined analysis of table-top experiments on violation of mirror symmetry in atoms. This analysis sets powerful constraints on a hypothesized particle, the extra Z-boson. Our raised bound on the Z'masses improves upon the Tevatron results and carves out a lower-energy part of the discovery reach of the Large Hadron Collider.

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JILA is a joint physics institute of the University of Colorado at Boulder and the National Institute of Standards and Technology. We support an eclectic and innovative research program that fosters creative collaborations among our scientists. Collaborations play a key role in the pioneering research JILA and the JILA Physics Frontier Center are known for around the world. To learn more, visit our About JILA page.